Spark-plug-amplifying means



Dec. 30, '1924.

F. FULGORA SPARK PLUG AMPLIFYING MEANS Filed Feb. 14,

Patented Dec. v30, 1924.

UNITED STATES PATENT FFICE.

FRED FULGORA, OF PITTSBURGH, PENNSYLVANIA, ASSIGNOR' 0F ONE-HALF T0 JAMES N. MOGRATH, JR., OF IITTSBURGIEI,` PENNSYLVANIA.

SPARK-PLUG-AMPLIFYING MEANS.

Application led February 14, 1920. Serial No. 858,789.

To all 'whom t may concern.'

Be it known that I, FRED FULGORA, a citizen of the United States, and a resident of Pittsburgh, in the county of Allegheny and 6 State of Pennsylvania, have invented certain new and useful Improvements in Spark-` PlugsAmplifying Means; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as 10 will enable others skilled in the art to which itappertains to make and nse the same.

This invention relates to improvements 1n sparking devices for internal combustion en-V invention consists in certain novel features4 of construction and combinations of parts as hereinafterset forth and pointed out in theA claim.

In the accompanying drawings; Figure 1 80 is a view partly in section and partly in elevation showing my improved amplier or condenser; Figure 2 is a View showing the application of the'same across the secondary terminals of the spark coil of an internal com- 85 bustion engine ignition system', and Figure 3 is a view illustrating the connection of the amplifier in parallel to the secondary of a magneto generator.

l represents my improved amplifier or condenser,-the same comprising a plurality of metal cylinders 2, 3, 4, 5 separated by high' insulatingmaterial 6.' The cylinders are arranged in two sets, the cylinders of each set alternating with the cylinders of the other s'et, and the cylinders of one set are electrically connected by a connector 7 at one end of the amplifier, while the cylinders of the other set are electrically. connected at the u other end of theamplifier by. a connector 8. The inside cylinder 2 of the amplifier is filled with insulating material 9 and into respective ends of this central body of insulating material, the threaded shanks 10 of connec,- tors 11, 12 arey inserted. The connector 11 holds in place, a metal disk 13 which engages the connector 7 of one set of cylinders and serves to electrically connect the same with said connector 11. In a similar manner, the connector 12 holdsfa disk 14 in place, the latter engaging the connector 8 of the other set of cylinders and electrically connecting the latter with the connector 12. Thus it will be seen that one side of the amplifier is connected with the connector 11 and that the other side is connected with the connector 12.

The amplifier may beof such length as to be disposed between the binding posts 15, 16 of an induction or spark coil 17, such 'as employed in ignition circuits of internal combustion engines, and in order to facilitate the application of the connectors 11, 12 to said binding posts, they are perforated as at 18.

vIn Figure 2 of the drawing, a wire 19 from the timer of an ignition system is shown connected with the binding post 15 of the spark coil and a wire 20 is shown connectin the other binding post 16 of said-spark co1 with a spark plug 21 on an engine 22, while the amplifier connects said binding posts and is therefore placed across the terminals of the secondary of said spark coil.

In Figure 3, the application of the amplifier is shown when employed with a magneto 23. The amplifier 1 is connected with a commutator or collector brush' 24 of the magneto and with the field magnet frame 25,-the amplifier being thus disposed so as to bridge the secondary side of the'magneto.l

Having fully described my invention what I claim as new and desire to secure by Letters-Patent, is 1 nv amplifier for ignition` systems compriaing a pair of concentric cylinders, the inner cylinder being open at both ends, an annulus bridging one end of thev space between the cylinders and electrically connecting the cylinders, a second pair of similar concentric cylinders alternating with the firstppair of cylinders, an annulus bridging the space between said second cylinders and electrically 100 connecting the cylinders at the ends opposite In testimony whereof, I have signed this .the first-mentioned annulus, insulation fillspecification in the presence of two subscribmg all the cylinders, a disk fitted against ing witnesses.

each annulus, and connectors carried by the FRED FULGORA. 5 disks and penetrating the central portion of Witnesses:

the insulation to secure all` the parts to- GEORGE R. CAREY,

gather. JAMES N. M. GRATH, Jr. 

